Electrically-protected grille-work or grating.



J. P. WILLIAMS H. HUHN. ELBGTRIGALQY PROTECTED GRILLE WORK 0R GRATING.

A XPPLIOATIOH HLEILDBO. s, 1910.

general efficiency.

tion, to secure entrano y' UNITED smiles PATENT' orrroE.

Jorm P. WILLIAMS AND'HERMANN HUHN, orNEw Yonx, n., Y., v.sssrofnons 'ro`ELEc'raIc nnNx rno'rnc'rxoN company, conrom'rron or nnLnwm.

ELECTBICALLY-PROTEETED GRILIJ'E-WORK 0R GRATING.

. specification ef Letterisvratenc. Patented May 28,1912.

@pannen nea neeember s, 1910. l serial no. 596,267.

i To all whom it mcy concern:

Be it known that We, JOHN P.' WILLIAMS and HERMANN HUHN, both citizensof the United States, and residents of New York, in the county and Stateof New or Gratings, of `which lthe following is a specification. i Y l nThis invention relates to that class of electrically-protectedgrille-.work or gratings which 'are adapted for use at or in doors,windows or other openings of abuilding or structure to be protected, andwhich operate, vwhen an attack is made upon their' parts, to close vanelectric circuit and cause an alarm tobegiven.' i

vOur improvements are adapted for effective use upon any structure to beprotected,

v=or in the construction of prison cells to prevent prisoners frommaking escape without giving an' alarmp, or the inventlon may be appliedtothe doors and wmdows ot' a prlson lfor alike purpose.

The object', of our invention is to provide a'n improved protectivegrille-Work or grateffectlve ing or cutting lthe "bars, and which willfurthermore possess advantages in point of simplicity, strength,positive operation and Thecomponent parts of our invention areassembled, and electrical connections made, in such a manner that an,attack in any way disturbing the normal status of theconstrucerethrough, especially by bending, clap,k pmg, or cutting thebars, will cause an electrilcircuitto be instantly closed and an alarmgiven.

A structure composed ofv our electricallyprotected grille-work such as asafe or vault or storage compartment.

In the drawings-Figure 1 is an elevation. showing our improved electri:ally-protected grille-work or grating applied to a window opening of abuilding and arranged to ol struct said opening and prevent lpassageYork, have invented certain new yand usefullmprovef ments inElectrically-Protected Grrille-VVorkk or grating may lbe, 'built tosurround any olncct to be. protected,

therethrough. Fig. 2 is a vertical section,

taken onthe line ,fr-al oFig. 1. Fig. 3'is a horizontal section, takenon the line y-y .of Fi .Y 2. Fig. 4 is a vertical section of a modi edform of construction.

dene-ted by the same reference characters.

Referring` to the drawings, our electrically-protected. grille-work --orgrating is shown 'at A, applied to a window opening, B, of a building,C. i g

They improved grille-worker grating, in the type of construction `hereinshown, come prises top and bottom supporting barsor members, l1 and Q,and vertlcal bars or members, 3,. the parts ofthe structure being vas.-sernbled and electrified in such a .manner that an alarm circuit,forming a part thereiof, will be operated to sound an'alarm in case aneffort is inade to gain entrance .throughv the structure by bending,clamping,

sawing, cutting or otherwise attacking the same. The top and bottomsupporting members 1 and 2 are similar in construct-ion and are composedof outer and inner channel Corresponding parts in all; the figures aremembers, and 5, spaced apart throughout and insulated one from theother, said channel members being of metal or other 'con-` ductingmaterial. The outer channel members 1 consist. ot' central webs, 6,having apertures, T, and spaced flanges, 8, lover which caps or co\'ersS), are placed andsecured. This constructitm provideschambers, 10, inwhich are housed the inner channel members 5, which comprise centralwebs` 11,'having apertures, 19., therein and spaced flanges, 14,thereon.

The vertical bars or members 3 of the structure are ot` metal' or otherconducting 4material and comprise outer tubular bars, 15, preferalilyreduced at the endsthereof,

tas at 1G, to,snugly tit into the apertures 7 of the uebs (3 ot' theouter channel members 4, and inner bars, 17, spaced from the tub'ularbars'l throughout and insulated therefrom by sleeves, 1S, ot fiber orother insu-v lating material which are seated over the ends Yof theinner bars '17 and in the ends oi? the outer tubular bars 15, as shownin Fig. 9. The 'insulating sleeves 18 are proa ably ,,copiposcdrfentii'ea saw, file or otl at 23'and 24, to th vided with annular flanges, 19,which, when the parts are relatively assen'ivbled', lie-betweentliecentral-webs o' and `ll of the outer and inner channel members 4 and 5respecf tively,and insulate one fromthe other.v Tlle'- innei" barsl'hmay be solid, asherein shown,l or they may be tubular if desired. Theends of Said bars 1T aretlhreaded, vas Q0, ai'i'd are passed through theapertures 12 in the ivebsi itl4 of the ,inner Achannel members 5, and'nits, Q1, are threaded ends to securelyY bind the structure together, aswill be readily understood Cross pins. are provii-led tans'yei'scly atune enilof the innerbars 17 '(or at both ends, if desired), for thefpurpose of makingr contactwitli thes'iia'reil llanges 8 of the outerchannel memberl -l-,- io close an alarm circuit, slioiildatliey innerliar l be'rotaied by theaction ol. asini/,tile on other instrumentI inanattempt to sever the same. 4 t Y EThe structure above described, ispiefihff ly 'ot conducting ma-l tei-iai, except the insulating sleevesiti. iInr the preferred 'electrical 5circuit. arg rangement, vthefoutei" and inner channel members tand 5. are' respectively'co'i`i`iieoted,

terminals ot' an :il:ii'iii"'cii"ciiit`, 25,'adapted {o beQclosed fandoperated when the insulated. partsiotfthe: structure. are brouglitintocontact-,by bending or clamping or should ier instrument cut or sei'f'eror baifsvoi' members be nitride upon th iislvizill2 be4 readilyunderstood.

or should any such' attack e siipporting'bars l and 2,

matic drop, 26, controlled by a magneti, 27, an alarm gong or device,28, 'and t-lieiusual battery, ,29.` Thus, in the operation of ouriinproyed electrically-protected grille-work ,91' grating, if in anattack upon the isfi'i'ic ture` any one ot tl should be bent, ordistortedinto contact with the `inner bars, afcircuit will beestablished tliriiiighntlie. outer tube lpouter channel inemderlgl, aconductor, 30, the battery2t, a. i'aiiidiictorl, the magnet 12T,a-conilucti'ni 32,'the inner channel member 5 and -thc innert-cd1?, .Theclosing of this circuit energies thcvinagnet 'Z'i'van'd causesits'armature hookwf-EB, ,to release itsieontact bar, 84, allowii'igit,to contact, with acontact point', 35, o'f a'local alarm circuit isestablished through a conductor, 37, theialarin gong' 28,.a, conductor,38, the battery 2t), the `cilindurtor 3l and the contactb'ar -n'ai'id`this circuit remains closed and the alarm Ai`,vill' be acne.l d inr ilbar 34 is iininuallyg resin The; flanges -14 ofv the i bers :"ifare, in'the prefrrriwllconslrnrli-on. rui away'fiis' ati'lfl'. lo allow the pins2 carried by the inner bars l? in pass when the. inner intimi-malposition.

screwed home klon ,Said' c positive and negative be used to, drillthrough the vertical lncliniled iii*y ;tbealarm circuitfnrrangement islan autoie outer tubularbar's circuit, 36, and a closed the contact* nnerchannel niein- .QZlbcing Ivmade with channel members 4 to close thconstructie the flanges 8- of the outer e alarm cirn- ,shown in Fig.; 4,a reviiluble bearing is provided for the innerdiaesl'i'. comprises abeari upon the ,threaded ng member, end of the innerchanneb-inember-terposed between the web 1l a lar groove or race,"42,`

struction shouldaniyattacl be ting the bars with` bai:` 15 ispenetrated, the `eu will come in contact with and then -eauscvthe rotatnseverance, and the'pin' thek in the -and close the al ,'oi' t'ozrth thethrough th ment with land 17. `It willMbe, understood,'thatfogrille-work or grating may enn'illoyed either.

e Contact yo y-tlie=feu the vgouter and' chanical supports :may lie-pla`the bai-sla? to, bracetheiim Ytion. i

itingr (nirsclves to the detail and. aijiltangeinentiof parts:

tions and modifications to varying 4conditions .of use,

ingention and improvements. yreserve the rightto modifications asYproperly ,fall scopiool our invention a-ndjitlie following' claims.

lla :jingv il claim 'and i cnt: ,i l l y1. An electijieaily-protectedoi' grating, roinprisiin,lr an outer an. inner bar ,rcioliiblyi mountendiniir vtherein and fixed ii'al i ino-veillentl said, inneconstitidiner el surfaces sulvisiant-ially, length.' ksiipy'i'oriiingiiieaiis'coiist louter bar in connection y,witlili Eibar and an 'innerinenil aid inner bar, said outer and f' bmw nl' said sii} porliiigiiieans electrical conductors. contact ii by :a: id rerolnbhliar andoper `Said bearing and seated over the central web ll of and balls, 4l,

a .stair or file andV Vthe ecirical conductors normali) spac'ei'l apartand havin throughout ,iii-heut, 4.

preferably 40, secured inner bai-L7 the innd an :innuffiii'e Conouterinnerf'bar reof without l QQ'carried by the inl? g5 ner bar willimmediately contactfwith'the flanges 8, of the'y ruiten-channelmember iyiis'ab'ove ttingi'insl iil-M 90 be effectively `inverticalii\lioi'izoiitiil pol 95 sition, and thatany suitable additionalineced between i n relative posi? VVe-do not desire to be undcrstomlas'liin 1300 as hei-cin shown .and described, as it ismanifest'tliiit=viiriai-5 therein may lbe; re-Yf sorted to, in theadaptation of our invention without ile-3" rparting from thc spiritandscope of =our` We ltlicietore w all such varuitions land* within ierinsot nis described our ,inventionmvef` lef-urlato. secure bydict-ters lat'against longitndi-i l i' land ou and being-l ler,r barsl 120 g exposedI1 vitntcd by ,an

sind ytubular 11251 ier in connect-ion ,withzw i linner iinenieeoni:titutin;y leans carried alive lo coii- A"said outer and innermembersfoi? aid supmally spaced apart and having exposed porting means,whereby when-Tsai ..utubular bar or revoluble bar is bent or-distortedto bring the exposed surfaces off'gdfdars in contact or the innerrevoluble rotated the circuit will. be closed to operate the alarm.

or grating, comprising an ou bar, an inner bar revolubly ing therein andfixed. a einst longitudinal movement,.said inner an vouter .barsconstituting electrical conductorsl and being norfaces substantiallythroughout theinlength, supporting meansv constituted b an outer bar inconnection with s aid tubulii an inner bar inconnection with 'said.revoluble bar, said outer and inner bars of said supporting means.constituting l electrical conductors, an insulation between said -outerand inner bars of said supporting means and between said tubular bar andrevoluble bar at the end portion thereof, a lateral project-- f ingmemberfcarried by said .revoluble bar and operative to contact with saidouter bar of the supportingnieans when said revoluble bar is rotated,and an electrical alarm circuit including said outer andinner barsv ofsaid supporting means, wherebyv when said spaced bars are bent ordistorted to bring their exposed surfaces in contact or the innerrevoluble bar is rotated the circuit will be operated to actuate thealarm. r

3. An electrically-.protected grille-work or grating, A an inner barrevolubly mounted and extending therein and fixed against longitudinal 1movement, said inner and outer bars constituting electrical conductorsand being nor-` mally spaced apart and.having exposed `surfaces,supporting means .constituted byan outer bar in connection with saidtubular bar'and an inner bar in connection with said 7 revoluble bar,said outer and inner bars of said supporting means constitutingelectrical, V

conductors, an insulation extending between said outer and inner bars'of said supporting means and between said tubular bar and revoluble barat the end portion thereof, a lateral member carried by said revolublebar and operative to contact with the outer vbar of said supportingmeans when said revoluble bar is rotated, a bearing 1n- -terposedbetween the inner bar of said supporting means and said revo'lublevba'r, and an electrical alarmr circuit including said inner and outerbars of said supporting.

means.

,4. An electrically-protected grille-work or grating, comprising anouter tubular bar, an inner bar extending therein and Afixed x .A andbetvvieen said 'tubular bar and inner. bar 2. Anelectrically-protected@gilllegryork.

r liary and lcomprisinganl outer tubularubar,

against longitudinal movement, said inner and. outer bars onstitutinelectrical conductors and being normal y vspaced apart and havingexposed surfaces, supporting means constituting an outer member inconnection with saidtubulanbar and an vinner member in connection withsaid in-iierbar,l an insulation extending between said outer and innermembers of said supporting means i at the' end portion thereof, a nutcarried at the end of said inner barandclamping the inner member ofsaidsupporting 4means and said insulation in operative position', and anelectricalalarin circuit including both said spaced outer tubular barand inner bar.

5. An electrically-protected grille-work or grating, comprising an outertubular bar,

'an inner r revolubly mounted and extending therein and xed a ainstlongitudinal. movement, said inner an outer bars constituting electricalconductors and being nor-4 mally s acedapart andhaving exposed sur--faces su antially` throughout their length` contact 'means carried bysaid revoluble bar for closing ,the circuit connection thereof when.said bar is rotated, supporting means inclosing the end of the innerrevoluble bar and its-contact means and constituted by'an f outer memberin connection with saidtubu- ,lar bar and an inner member in connectionwith said revoluble bar, said outer and inner members of said supportingmeans constinol tuting electrical conductors andbeing nor- 'l mallyspaced apart and having exposed surfaces substantially throughout theirlength, and an electrical alarm circuit including said tubular bar and.revoluble bar and said outer and inner members of said supporting means.

or grating, comprising afixed outer tubular bar, an inner bar extendinglongitudinally therein 'and fixed against swinging orlongitudinal'movenient, said inner and outer 6. Anelectrically-protected grille-worky ars constituting electricalconductors and being permanentlyspaced apart andhaving exposed op sitesurfaces substantially throughout t eir length, su porting means housingthe end portions o said -barsand each constituted by an outer member orbar in connection with said tubular bar and an inner member' or bar inconnection withsaid .first named inner bar, said inner member or barextending within said outer member or bar of said supporting means andbeing spaced therefrom substantially throu hout its length and saidmembers or bars o said sup orting means having exposed opposite sur acessul'is'tantially throughout their length-,and "constituting electricalvconductora ing id' ed members or barsptthesu and'bot'h the spaced cuterl tu ular 4Bairgudthe inner bar extending nlectrical alarm circuitinelud- 4, A1,027,679 {hel-ein, .whereby when said 'spaced membeismunesl in ypresence of the subscribing or bars lof the supporting'mens'of Said witnes. I w. f

Spaced Outer tubular bary and the inner bar y' I extending therein :1rebentor ditorted tb L 5 bring then' opposite exposed surfaces in conf e ftact 'thecivrcut will beoperated to actute Witnesses:

the alarm. I y M. GnnENwoob.

In testimony whereof `we have slgned our E. SmNnYxBooTH.

